Dahlia plant named ‘Kiedahsuy’

ABSTRACT

A distinct cultivar of  Dahlia  plant named ‘Kiedahsuy’, characterized by its upright, compact and rounded plant habit; freely basal branching habit; semi-double type inflorescences; and bright yellow-colored ray and disc florets.

Botanical classification/cultivar designation: Dahlia variabilis cultivar Kiedahsuy.

BACKGROUND OF THE INVENTION

The present Invention relates to a new and distinct cultivar of Dahlia plant, botanically known as Dahlia variabilis, commercially referred to as a pot-type Dahlia, and hereinafter referred to by the cultivar name Kiedahsuy.

The new Dahlia is a product of a planned breeding program conducted by the Inventor in Venhuizen, The Netherlands. The objective of the breeding program is to create new pot-type Dahlia, cultivars with desirable inflorescence form and attractive ray and disc floret coloration.

The new Dahlia originated from a cross-pollination made by the Inventor in 1999 of a proprietary Dahlia variabilis selection identified as code number 98.1833, not patented, as the female, or seed, parent with a proprietary Dahlia variabills selection identified as code number 98.3426, not patented, as the male, or pollen, parent. The new Dahlia was discovered and selected by the Inventor as a single flowering plant within the progeny of the stated cross-pollination in a controlled environment in Venhuizen, The Netherlands.

Asexual reproduction of the new Dahlia by vegetative tip cuttings was first conducted in Mariahout-Laarbeek, The Netherlands since 2000. Asexual reproduction by cuttings has shown that the unique features of this new Dahlia are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The cultivar Kiedahsuy has not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature and daylength, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Kiedahsuy’. These characteristics in combination distinguish ‘Kiedahsuy’ as a new and distinct pot-type Dahlia:

-   -   1. Upright, compact and rounded plant habit.     -   2. Freely basal branching habit, full and dense plants.     -   3. Semi-double type inflorescences.     -   4. Bright yellow-colored ray and disc florets.     -   5. Good garden performance.

Compared to plants of the female parent, plants of the new Dahlia differ in ray floret coloration as plants of the female parent have pale yellow-colored ray florets. Compared to plants of the male parent plants of the new Dahlia differ primarily in ray floret coloration.

Plants of the new Dahlia can be compared to plants of the Dahlia cultivar Dahlstar Yellow, not patented. In side-by-side comparisons conducted in Venhuizen, The Netherlands, plants of the new Dahlia are more compact, more freely branched, flower earlier and have more ray florets per inflorescence than plants of the cultivar Dahlstar Yellow.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Dahlia showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ from the color values cited in the detailed botanical description which accurately describe the colors of the new Dahlia.

The photograph at the bottom of the sheet comprises a side perspective view of a typical flowering plant of ‘Kiedahsuy’.

The photograph at the top of the sheet is a close-up view of typical inflorescences of ‘Kiedahsuy’.

DETAILED BOTANICAL DESCRIPTION

In the following description, color references are made to The Royal Horticultural Society Colour Chart, 1995 Edition, except where general terms of ordinary dictionary significance are used. The aforementioned photographs and following observations and measurements describe plants grown and flowered during the winter and early spring in Lompoc, Calif., under commercial practice in a polycarbonate-covered greenhouse with day temperatures about 18 to 24° C., night temperatures about 16 to 18° C., and light levels about 4,000 to 8,000 foot-candles. Rooted cuttings were planted in 10-cm container and plants had been growing for about ten weeks when the photographs and the description were taken.

-   Botanical classification: Dahlia variabilis cultivar Kiedahsuy. -   Parentage:     -   -   Female, or seed, parent.—Proprietary Dahlia variabilis             selection identified as code number 98.1833, not patented.         -   Male, or pollen, parent.—Proprietary Dahlia variabilis             selection identified as code number 98.3426, not patented. -   Propagation:     -   -   Type.—Terminal tip cuttings.         -   Time to rooting.—About two weeks at 21° C.         -   Time to develop a rooted cutting.—About three weeks at 21°             C.         -   Root description.—Thick, fleshy, freely branching;             development of tubers has not been observed. -   Plant description:     -   -   Appearance.—Herbaceous pot-type Dahlia. Inverted triangle;             stems mostly upright and somewhat outwardly spreading giving             a uniformly rounded appearance to the plant; relatively             compact. Freely basal branching, about ten lateral branches             per plant; dense and full plants. Moderately vigorous growth             habit.         -   Plant height, soil level to top of leaf plane.—About 10 cm.         -   Plant height, soil level top of inflorescences.—About 18 cm.         -   Plant width or area of spread.—About 16 cm.         -   Lateral branches.—Length: About 10 cm. Diameter: About             2.5 mm. Internode length: About 1.3 cm. Strength: Strong.             Texture: Smooth, glabrous. Color: 144B.         -   Foliage description.—Arrangement: Opposite; simple. Length:             About 5 cm. Width: About 3.8 cm. Shape: Ovate. Apex: Acute.             Base: Attenuate. Margin: Serrate. Texture, upper and lower             surfaces: Smooth, glabrous. Petiole length: About 1.8 cm.             Petiole diameter: About 2.5 mm. Petiole texture, upper and             lower surfaces: Smooth, glabrous. Color: Developing foliage,             upper surface: 147A. Developing foliage, lower surface:             147B. Fully expanded foliage, upper surface: 146A. Fully             expanded foliage, lower surface: 147C. Venation, upper and             lower surfaces: 147C. Petiole, upper and lower surfaces:             144A. -   Inflorescence description:     -   -   Appearance.—Terminal and axillary semi-double type             inflorescences held above and beyond the foliage on strong             flexible peduncles; inflorescences face upright or             outwardly. Composite inflorescence form with obovate-shaped             ray florets and disc florets massed at the center, ray and             disc florets arranged acropetally on a capitulum.             Inflorescences not fragrant. Inflorescences persistent.         -   Flowering response.—Plants flower continuous and freely from             April until October in Northern Europe.         -   Postproduction longevity.—Inflorescences maintain good color             and substance for about seven to ten days on the plant.         -   Quantity of inflorescences.—About twelve inflorescences and             inflorescence buds per plant.         -   Inflorescence bud.—Shape: Oblate. Length: About 8 mm.             Diameter: About 1 cm. Color: 4A.         -   Inflorescence size.—Diameter: About 7 cm. Depth (height)             About 3.5 cm. Diameter of disc: About 1.8 cm. Receptacle             height: About 1.5 cm. Receptacle diameter: About 2.4 cm.         -   Ray florets.—Shape: Obovate. Aspect: Straight, concave.             Length: About 3 cm. Width: About 1.6 cm. Apex: Rounded to             slightly emarginate. Base: Attenuate. Margin: Entire.             Texture: Smooth, glabrous; satiny. Number of ray florets per             inflorescence: About 58 in about five rows. Color: When             opening and fully opened, upper surface: 4A; color becoming             closer to 4B. When opening and fully opened, lower surface:             4B.         -   Disc florets.—Shape: Tubular, elongated. Apex: Five-pointed.             Length: About 1.3 cm. Width: Apex, about 2.5 mm; base, about             1.5 mm. Number of disc florets per inflorescence: About 84.             Color: Immature: 14A. Mature, apex and mid-section: 5B.             Mature, base: 4C.         -   Involucral bracts.—Quantity: About 66; imbricate. Length:             About 1.2 cm. Width: About 5 mm. Shape: Elliptical. Apex:             Rounded Base: Truncate. Margin: Entire. Texture, upper and             lower surfaces: Smooth, thin, membranous. Color, upper and             lower surfaces: 147A.         -   Peduncles.—Length, terminal peduncle: About 8.5 cm. Length,             second peduncle: About 9 cm. Length, third peduncle: About             9.3 cm. Diameter: About 2 mm. Strength: Strong, very             flexible. Aspect: Upright to about 30° C. Texture: Smooth,             glabrous. Color: 144A.         -   Reproductive organs.—Androecium: Present on disc florets             only. Anther color: 23A. Pollen amount: Scarce. Pollen             color: 23A. Gynoecium: Present on both ray and disc florets.             Stigma color: 12A. Style color: 12C. Ovary color: 150D.         -   Seed/fruit.—Seed and fruit production has not been observed. -   Disease/pest tolerance: Plants of the new Dahlia have not been     observed to be tolerant to pathogens and pests common to Dahlias. -   Garden performance: Plants of the new Dahlia have been observed to     be wind and rain-tolerant; and have been observed to be tolerant to     temperatures ranging from 5 to 30° C. 

1. A new and distinct cultivar of Dahlia plant named ‘Kiedahsuy’, as illustrated and described. 